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Manufacturers often underestimate the cost of the D check. Boeing underestimates the cost for four of its aircraft, and the expectation is that it has underestimated it for the B787-9 which in 2018 had not been in service for long enough to have been put through a D check. [15] All amounts in millions of United States dollars, as of 2018. [15]
Boeing 747: Corrosion in pylon fuse pin leading to metal fatigue 4 on board, 39 on ground Engine No.3 separated from its pylon which caused the adjacent engine No.4 to also fall off, taking the slats with them; stall and crash on attempted landing 1996-07-17 TWA Flight 800: Moriches Inlet, near East Moriches, New York, United States Boeing 747
The Boeing 747 is a long-range wide-body airliner designed and manufactured by Boeing Commercial Airplanes in the United States between 1968 and 2023. After the introduction of the 707 in October 1958, Pan Am wanted a jet 2 + 1 ⁄ 2 times its size, to reduce its seat cost by 30%.
IABG Fatigue test of the Airbus A380 wing (showing the wing deflected upwards superimposed on the unloaded wing). The wing was tested for a total of 47500 flights which is 2.5 times the number of flights in 25 years of operation. Each 16 hour flight took 11 minutes to simulate on the fatigue test rig. [1]
The Boeing 747-400 is a large, long-range wide-body airliner produced by Boeing Commercial Airplanes, an advanced variant of the initial Boeing 747.The "Advanced Series 300" was announced at the September 1984 Farnborough Airshow, targeting a 10% cost reduction with more efficient engines and 1,000 nautical miles [nmi] (1,900 km; 1,200 mi) of additional range.
Pratt & Whitney faced difficulties with the JT9D design during the Boeing 747 test program. Engine failures during the flight test program resulted in thirty aircraft being parked outside the factory with concrete blocks hanging from the pylons, awaiting redesigned engines. Boeing and Pratt & Whitney worked together in 1969 to solve the problem.
Boeing does not typically make adjustments to the type of panel involved in last week's 737 MAX 9 blowout unless factory tests reveal a problem, a source familiar with Boeing's industrial process ...
Examples of this include the Boeing 787 Dreamliner with a delay of 4 years with massive cost overruns, the Boeing 747-8 with a two-year delay, the Airbus A380 with a two-year delay and US$6.1 billion in cost overruns, the Airbus A350 with delays and cost overruns, the Bombardier C Series, Global 7000 and 8000, the Comac C919 with a four-year ...